SUPERIO(9)             FreeBSD Kernel Developer's Manual            SUPERIO(9)

NAME
     superio, superio_devid, superio_dev_disable, superio_dev_enable,
     superio_dev_enabled, superio_find_dev, superio_get_dma,
     superio_get_iobase, superio_get_irq, superio_get_ldn, superio_get_type,
     superio_read, superio_revid, superio_vendor, superio_write - Super I/O
     bus interface

SYNOPSIS
     #include <sys/bus.h>
     #include <dev/superio/superio.h>

     uint16_t
     superio_devid(device_t dev);

     void
     superio_dev_disable(device_t dev, uint8_t mask);

     void
     superio_dev_enable(device_t dev, uint8_t mask);

     bool
     superio_dev_enabled(device_t dev, uint8_t mask);

     device_t
     superio_find_dev(device_t dev, superio_dev_type_t type, int ldn);

     uint8_t
     superio_get_dma(device_t dev);

     uint16_t
     superio_get_iobase(device_t dev);

     uint8_t
     superio_get_irq(device_t dev);

     uint8_t
     superio_get_ldn(device_t dev);

     superio_dev_type_t
     superio_get_type(device_t dev);

     uint8_t
     superio_read(device_t dev, uint8_t reg);

     uint8_t
     superio_revid(device_t dev);

     superio_vendor_t
     superio_vendor(device_t dev);

     void
     superio_write(device_t dev, uint8_t reg, uint8_t val);

DESCRIPTION
     The superio set of functions are used for managing Super I/O devices.
     The functions provide support for raw configuration access, locating
     devices, device information, and device configuration.

   The controller interface
     The superio_vendor() function is used to get a vendor of the Super I/O
     controller dev.  Possible return values are SUPERIO_VENDOR_ITE and
     SUPERIO_VENDOR_NUVOTON.

     The superio_devid() function is used to get a device ID of the Super I/O
     controller dev.

     The superio_revid() function is used to get a revision ID of the Super
     I/O controller dev.

     The superio_find_dev() function is used to find a device on the
     superio(4) bus, specified by dev, that has the requested type and logical
     device number.  Either of those, but not both, can be a wildcard.
     Supported types are SUPERIO_DEV_GPIO, SUPERIO_DEV_HWM, and
     SUPERIO_DEV_WDT.  The wildcard value for type is SUPERIO_DEV_NONE.  The
     wildcard value for ldn is -1.

   The device interface
     The superio_read() function is used to read data from the Super I/O
     configuration register of the device dev.

     The superio_write() function is used to write data to the Super I/O
     configuration register of the device dev.

     The superio_dev_enable(), superio_dev_disable(), and
     superio_dev_enabled() functions are used to enable, disable, or check
     status of the device dev.  The mask parameter selects sub-functions of a
     device that supports them.  For devices that do not have sub-functions,
     mask should be set to 1.

   The accessor interface
     The superio_get_dma() is used to get a DMA channel number configured for
     the device dev.

     The superio_get_iobase() is used to get a base I/O port configured for
     the device dev.  The device may expose additional or alternative
     configuration access via the I/O ports.

     The superio_get_irq() is used to get an interrupt number configured for
     the device dev.

     The superio_get_ldn() is used to get a Logical Device Number of the
     device dev.

     The superio_get_type() is used to get a type of the device dev.

SEE ALSO
     superio(4), device(9), driver(9)

AUTHORS
     This manual page was written by Andriy Gapon avg@FreeBSD.org

FreeBSD 13.1-RELEASE-p6        October 11, 2019        FreeBSD 13.1-RELEASE-p6